Apparatus for dyeing of knitted and woven fabrics



Feb. 12, 1929. 1,702,106

c. CALLEBAUT ET AL APPARATUS FOR DYEING OF KNITTED AND WOVEN FABRICS Original Filed March 10, 1926 M w w W MMQ I Patented Feb. l2, Hill i9.

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enemies caLLnnaUr AND JULIEN nn'BLroeuY, on Lnnns, ENGLAND.

APPARATUS FOB'IDYEING 0F KNITTED AND WOVEN FABRICS.

lh'iginal application filed. March 10, 1928, Serial No. 93,667, and in Great Britain November 30, 1925.

Divided and this application filed December 22, 1926. Serial No. 156,433.

The present invention relates to improve ments in dyeing machines, and more particularly to the dyeing of knitted or woven arti cles.

'lhe dyeing machines of the present invention include a tank or vat, the contour of the shell of which is constructed with a view to creating a path for the agitated liquor and material over the whole of the internal space of the tank. It has been found by experiment that a tank of circular cross section is unsuitable in that the stream of compressed air and agitated fluid does not tollow completely the curvatlu'e oi the shell but takes a path of an ellipse having; its major axis vertical, the said ellipse covering a portion only of the cross section oi the tank. In this way the circulation or agitation current is short circuited i. e. part of the fluid and the material in the tank remains untouched by the stream of fluid created by the compressed air.

It has been found by experiment that the most suitable contour of the shell of the vat or tank is as shown in the accompanying diagrammatic drawing, which shows a tank in cross section. The length of this is proportional to the desired capacity and has no relation to the height or width of the tank. The basic measurement of the tank is the vertical. distance between the points 1, 2. With centre 1 and radius between one and a half times to twice the distance between the points 1 and 2 a curve 3 is described which will form one of the bounding walls of the tank. Similarly the centre 2 and the same radius, (whatever radius that may be between the above stated margin) a curve 4- is described. '.lhe curves or quadrants 3 and l are joined by the portion or wall 5, which is tangential to both curves 3 and 4;. Thus the height of the tank is be tween four to five times the distance between. the basic points 1 and 2, while the wall 5 is equal in length to the distance between the basic points 1 and 2.

lVith centre 6 and radius between three to four times the vertical distance between the points 1 and 2, the quadrant 7 is described. The point 6 displaced from the point 1 by an amount equal to the desired radius of the quadrant 7 less the vertical distance between the basic points 1 and 2, and the radius of either of the quadrants 3 or 1-. It will be seen that, as the radius of the quadrant 7 is between three to four times the distance beone and a half to twice the distance between the basic points 1 and 2, the radius of the quadrant 7 is between one and a halt to two and two thirds times the radius of the quadrants 8 and 4.

In the preferred form of construction the radii ol' the quadrants 3 and t are twice the distance between the base points 1 and 2, while the radius of the quadrant 7 is four times the distance between the said basic points, that Hi; to say, the radius of the quadrant? is double that of either of the quadrants 3 or at, and the height of the tank is live sixths of the width.

Portions 8 and 9 of the wheel are then determined, the portion 8 being a vertical continuation of a path tangential to the quadrant 7 and the portion 9 being in a vertical plane at a horizontal distance from the wall 8 of between two and a quarter to three and a quarter times the distance between the basic points 1 and 2 or the height of the vertical wall 5. The upper parts of the portions 8 and 9 constitute the loading opening of the vat and it will be noticed that the uppermost part of the section 8 of the shell lies above the horizontal plane tangential with the portion 3 thereby eliminating overflow of fluid within the tank.

One or more inlets for the compressed air are provided at 10, the path of travel of the compressed air being as indicated by the arrow. In this way the liquid and the material within the tank are being-lifted while the compressed air is travelling around the portion on the left hand side or circulating curve of the tank shown in the drawings, whilst the material commences to drop after it has reached its uppermost position on the right hand. side, i. e. beneath the opening of the tank. The quadrant 7 of: the tank is thus termed. the dropping curve. In. a modified. form oil construction and. in the case where it desirable to provide two alternate directions of flow of the compressed air, for example, clockwise and anti-clocluvise, the dropping curve oi the tank is eliminated and a second circulating curve is formed diametrically opposite the first, the two curves being separated by an opening of similar width to that disclosed in the above calculations. In tanks of this type it is possible to pass the com pressed air into the tank through one or more orifices 10 whereby the material, dye

liquor and compressed air Will travel clockwise, and after a given perlod to close such orifice or orifices and open others at a corresponding position at the foot of the second circulating curve so that the material, dye liquor and compressed air will travel anticlockwise. This method of procedure eliminates the possibility'o't' the materialbecomin g entangled. V p 7 Te declare that What We claim is A tank or vat for dyeing knitted or Woven articles having one WELll fOIIIlGCl by acirculating curve comprising a pair of quadrants and a vertical joining portion tangential to both quadrants anda second all contormlng to a dropping curve comprising a third quadrant the radius of whlch 1s not less than one and a CHARLES CALLEBAUTQ JULIEN DE BLIGQUY. 

